Some of Your DNA May Not Code for Any Protein

question 62

Multiple Choice

Some of your DNA may not code for any protein and has no known function in gene regulation; it is sometimes referred to as "junk" DNA. How do nucleotide sequences of "junk DNA" evolve?

• A)They evolve through natural selection.
• B)They evolve through genetic drift and other chance processes.
• C)They evolve to be more useful by taking on new functions.
• D)They evolve by gradually being eliminated from the gene pool.

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Definitions:

Personal Identity

An individual's conception and expression of their own self and personality, including aspects of their life that make them unique.

Perceptual Defence

A psychological mechanism that screens and excludes from consciousness distressing or threatening information.

Target Cues

Specific indicators that guide individuals' attention or actions towards a particular goal or outcome.

Bruner's Model

A theory of cognitive development proposed by Jerome Bruner, emphasizing the importance of categorization and the conceptualization of learning as an active process.